variable speed furnace

I just had a variable speed oil furance installed...the quietness was one of the selling points but when it is ramped up to the maximum speed it is anything but quiet. Does anybody know if the speed can be adjusted to make it quieter? I read somewhere in the literature it was factory set so don't know if this is possible or I just need to get used to it but I paid for quiet and it's not.

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variable speed furnace

Call the installers back. It dosn't sound like they have the blower set up right. There could be many settings depending on what brand you bought.
The other problem could be that it is to big for your existing ductwork.